JPS645263A - Color image reader - Google Patents

Color image reader

Info

Publication number
JPS645263A
JPS645263A JP62162022A JP16202287A JPS645263A JP S645263 A JPS645263 A JP S645263A JP 62162022 A JP62162022 A JP 62162022A JP 16202287 A JP16202287 A JP 16202287A JP S645263 A JPS645263 A JP S645263A
Authority
JP
Japan
Prior art keywords
near infrared
lighting
sensor
cut filter
color image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62162022A
Other languages
Japanese (ja)
Inventor
Makoto Matsuki
Toshio Shimizu
Koji Sato
Masaru Ozawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62162022A priority Critical patent/JPS645263A/en
Publication of JPS645263A publication Critical patent/JPS645263A/en
Pending legal-status Critical Current

Links

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Abstract

PURPOSE:To prevent the deterioration of reading quality in the beginning of lighting or at the time of a low temperature by preventing near infrared light spectrally emitted by a fluorescent light with the use of a near infrared cut filter. CONSTITUTION:The near infrared cut filter 5 of a multilayered film type having a transmittance of more than 70% at 670nm and more than 20% at 700nm is placed right before a sensor 4. Consequently, spectrum emission generated from a pale colored fluorescent light just after lighting is restrained and the contamination of near infrared light into the sensor 4 being sensitive to a green and a blue color can be prevented.
JP62162022A 1987-06-29 1987-06-29 Color image reader Pending JPS645263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162022A JPS645263A (en) 1987-06-29 1987-06-29 Color image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162022A JPS645263A (en) 1987-06-29 1987-06-29 Color image reader

Publications (1)

Publication Number Publication Date
JPS645263A true JPS645263A (en) 1989-01-10

Family

ID=15746576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162022A Pending JPS645263A (en) 1987-06-29 1987-06-29 Color image reader

Country Status (1)

Country Link
JP (1) JPS645263A (en)

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